<script>
/* eslint react/no-multi-comp:0, no-console:0 */

import '../assets/index.less'
import '@/components/vc-time-picker/assets/index.less'
import Picker from '../src/Picker'
import zhCN from '../src/locale/zh_CN'
import enUS from '../src/locale/en_US'
import '../../vc-time-picker/assets/index.less'
import TimePickerPanel from '../../vc-time-picker/Panel'
import BaseMixin from '@/components/_util/BaseMixin'

import RangeCalendar from '../src/RangeCalendar'

import moment from 'moment'
import 'moment/locale/zh-cn'
import 'moment/locale/en-gb'

const cn = window.location.search.indexOf('cn') !== -1

if (cn) {
  moment.locale('zh-cn')
} else {
  moment.locale('en-gb')
}

const now = moment()
if (cn) {
  now.utcOffset(8)
} else {
  now.utcOffset(0)
}

const defaultCalendarValue = now.clone()
defaultCalendarValue.add(-1, 'month')

const timePickerElement = (h) => <TimePickerPanel defaultValue={[moment('00:00:00', 'HH:mm:ss'), moment('23:59:59', 'HH:mm:ss')]}/>

function newArray (start, end) {
  const result = []
  for (let i = start; i < end; i++) {
    result.push(i)
  }
  return result
}

function disabledDate (current) {
  const date = moment()
  date.hour(0)
  date.minute(0)
  date.second(0)
  return current.isBefore(date) // can not select days before today
}

function disabledTime (time, type) {
  console.log('disabledTime', time, type)
  if (type === 'start') {
    return {
      disabledHours () {
        const hours = newArray(0, 60)
        hours.splice(20, 4)
        return hours
      },
      disabledMinutes (h) {
        if (h === 20) {
          return newArray(0, 31)
        } else if (h === 23) {
          return newArray(30, 60)
        }
        return []
      },
      disabledSeconds () {
        return [55, 56]
      },
    }
  }
  return {
    disabledHours () {
      const hours = newArray(0, 60)
      hours.splice(2, 6)
      return hours
    },
    disabledMinutes (h) {
      if (h === 20) {
        return newArray(0, 31)
      } else if (h === 23) {
        return newArray(30, 60)
      }
      return []
    },
    disabledSeconds () {
      return [55, 56]
    },
  }
}

const formatStr = 'YYYY-MM-DD HH:mm:ss'
function format (v) {
  return v ? v.format(formatStr) : ''
}

function isValidRange (v) {
  return v && v[0] && v[1]
}

function onStandaloneChange (value) {
  console.log('onChange')
  console.log(value[0] && format(value[0]), value[1] && format(value[1]))
}

function onStandaloneSelect (value) {
  console.log('onSelect')
  console.log(format(value[0]), format(value[1]))
}

const Demo = {
  mixins: [BaseMixin],
  data () {
    return {
      value: [],
      hoverValue: [],
    }
  },
  methods: {
    onChange (value) {
      console.log('onChange', value)
      this.setState({ value })
    },

    onHoverChange (hoverValue) {
      this.setState({ hoverValue })
    },
  },
  render (h) {
    const state = this.$data
    const calendar = (
      <RangeCalendar
        hoverValue={state.hoverValue}
        onHoverChange={this.onHoverChange}
        showWeekNumber={false}
        dateInputPlaceholder={['start', 'end']}
        defaultValue={[now, now.clone().add(1, 'months')]}
        locale={cn ? zhCN : enUS}
        disabledTime={disabledTime}
        timePicker={timePickerElement(h)}
      />
    )
    return (
      <Picker
        value={state.value}
        onChange={this.onChange}
        animation='slide-up'
        calendar={calendar}
      >
        {
          ({ value }) => {
            return (<span>
              <input
                placeholder='please select'
                style={{ width: '350px' }}
                disabled={state.disabled}
                readOnly
                className='ant-calendar-picker-input ant-input'
                value={isValidRange(value) && `${format(value[0])} - ${format(value[1])}` || ''}
              />
            </span>)
          }
        }
      </Picker>)
  },
}

export default {
  render (h) {
    return (
      <div>
        <h2>calendar</h2>
        <div style={{ margin: '10px' }}>
          <RangeCalendar
            showToday={false}
            showWeekNumber
            dateInputPlaceholder={['start', 'end']}
            locale={cn ? zhCN : enUS}
            showOk={false}
            showClear
            format={formatStr}
            onChange={onStandaloneChange}
            onSelect={onStandaloneSelect}
            disabledDate={disabledDate}
            timePicker={timePickerElement(h)}
            disabledTime={disabledTime}
          />
        </div>
        <br />

        <div style={{ margin: '20px' }}>
          <Demo />
        </div>
      </div>
    )
  },
}

</script>
